G. Love & Special Sauce will open "Unity Tour 2013" concert here, along with Pennywise and Sublime With Rome

There's no guarantee that concertgoers will get a contact high when the "Unity Tour" 2103 comes to town in August, but chances may be at least slightly higher that they will.

An overly blunt suggestion? Perhaps.

But probably not for a tour that is headlined by genre-mashing jam-band favorites 311 and also features "Insane in the Brain" and "Hits from the Bong" hip-hop veterans Cypress Hill and the roots-rocking G. Love & Special Sauce.

For added oomph, the tour's Aug. 3 tour stop at Sleep Train Amphitheatre (the Chula Vista venue formerly known as Cricket Wireless Amphitheatre) is one of only three dates on the two-dozen city tour on which two additional bands, Pennywise and Sublime With Rome, are being added to the lineup.

Missing from the lineup is San Diego's Slightly Stoopid, which has toured with 311 for several of the past summers on the Unity Tour. Slightly Stoopid begins its own nationwide tour tomorrow in Arkansas.